Ultrafine grinding of fly ash with grinding aids: Impact
1/3/2015#0183;#32;The grinding experiment of fly ash was carried out by using laboratory ball mill. The type of the ball mill is 500 mm #215; 500 mm, 48 r/min and closed circuit, and the grinding media is composed by 60 kg steel balls (40 mm, 50 mm, 60 mm and 70